Community Water System · PWS SC1010003
Sullivans Island Town of (1010003)
Operator location Sullivans Island, South Carolina - 44% of 9 violations are health-based (upper-third health share (> 23%)); surface water source; 2,521 served per SDWIS.
- 2,521
- People served (this PWS)
- 9
- EPA violations (this PWS)
- 4
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Sullivans Island Town of (1010003) standing, low SDWIS violation third
44% of 9 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 44% is upper-third health share (> 23%). Population rank #11,799 of 29,740 among systems serving 500+.
The verdict
Sullivans Island Town of (1010003) is in the lower third by violation count (9; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is mid-pack at 2,521 (mid served population (≤ 3,309)). Health-based share is 44% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #11,799 of 29,740
- Population · /systems
- #185 of 314
- Population · SC
- 9
- Total EPA violations on record
- 44%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,082
- County
- Charleston
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 3
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Fluoride | MCL | 4 | 1994 |
| Lead and Copper Rule | MR | 2 | 1995 |
| Coliform (TCR) | MR | 1 | 1997 |
Violation Count vs. the National Corpus
Sullivans Island Town of (1010003) has 9 recorded EPA violations, 17% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 82% carry more. 44% of this system's own violations are health-based (4 of 9), and it ranks #11,799 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
9 Among the lowest violation counts fewer violations than 82% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Sullivans Island Town of (1010003)
4 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for SC1010003.
Sources: EPA SDWIS
Nationwide peers
9 violations · 2,521 served: nearest cross-state SDWIS matches.
Cross-state systems with similarly light violation ledgers
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Sullivans Island Town of
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in South Carolina compares on the same EPA violation measures. South Carolina systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.